CN1197723A

CN1197723A - Casting apparatus for formation of resin-made membrane

Info

Publication number: CN1197723A
Application number: CN98106687A
Authority: CN
Inventors: 米谷秀雄; 北嶋英俊; 后藤拓也; 中尾治纪; 大井大介
Original assignee: Mitsubishi Heavy Industries Ltd
Current assignee: Mitsubishi Heavy Industries Ltd
Priority date: 1997-04-21
Filing date: 1998-04-20
Publication date: 1998-11-04
Anticipated expiration: 2018-04-20
Also published as: ATE276084T1; ID20180A; EP1172196B1; CN1058442C; EP0879691B1; KR19980081494A; ATE222169T1; DE69807143D1; KR100257642B1; EP0879691A2; EP0879691A3; DE69807143T2; TR199800731A3; TW426601B; US6273704B1; DE69826334T2; DE69826334D1; EP1172196A1; TR199800731A2

Abstract

The present invention relates to a casting apparatus for formation of a resin-made membrane which is made to be capable of accomplishing a stable pressure reduction through a suction chamber irrespective of the dimension of an interval between a die and a cooling roll. Thus, in the apparatus according to this invention, a suction chamber (4, 40) is disposed independently of a die (1) and is located to define a necessary seal gap (4d) with respect to a cooling roll (3). Further, a circumferentially moving mechanism is provided to shift the suction chamber (4, 40) along the circumferential directions of the cooling roll (3) while maintaining the necessary seal gap (4d). This invention is applicable, for example, to a biaxial oriented film machine, a non-oriented film machine, a sheet machine, etc.

Description

Casting apparatus for formation of resin-made membrane

The present invention relates to membranaceous or flaky resin made membrane (representing a kind of diaphragm) moulding, and relate to a kind of casting apparatus for formation of resin-made membrane, for example be suitable as biaxially oriented film-making machine, omnidirectional film-making machine, pelleter etc.

Figure 31 and Figure 32 are respectively side elevation view and front elevation view, the casting apparatus for formation of resin-made membrane of technology before all concrete expression.End sides of plant width direction before though Figure 32 only represents, the structural form of other end sides is all identical therewith.

As Figure 31 and shown in Figure 32, equipment was equipped with T pressing mold 101 in the past, be used for and be extruded into membranaceous or sheet film 102 from the molten resin that extruder (not having diagram) comes, other adorns casting roller (chill roll) 103, be used on outer circumference surface, accepting the film 102 that T pressing mold 101 is extruded, cooling and handle thin films 102 also are equipped with and inhale chamber (vacuum box) 104, and film 102 is stably closely contacted with casting roller 103 surfaces.

In this structure, casting roller 103 can rotate with respect to bogie side frame 107 by a roll shaft 106 supportings.

Inhaling chamber 104 firmly is fixed on 101 1 sides of T pressing mold.In addition, vavuum pump 105 is connected with suction chamber 104, makes that air is sucked by inhaling chamber 104 oral area 104a between film 102 and the casting roller 103 when 105 operations of this vavuum pump.

The oral area 104a that constitutes runs through film 102 whole width, near the part that film 102 begins and casting roller 103 outer circumference surfaces closely contact.In addition,, set up seal clearance 104b size, guarantee the tight required suction of contact portion (pressure reduction stage) between film 102 and the casting roller 103, casting roller 103 is rotated inhaling formation one seal clearance 104b between chamber 104 and the casting roller 103.In Figure 31 and Figure 32, used roller when these equipment of Ref. No. 108 expression move.

Under above-mentioned structure situation, the resin that is not had the fusion of diagram extruder places casting roller 103 outer circumference surfaces, cooling forming again by the membranaceous or sheet film 102 of T pressing mold 101 extruding.

At this moment, inhale that air are aspirated by vavuum pump 105 in the chamber 104, causing between film 102 and the casting roller 103 closely, the contact portion air is sucked by suction chamber 104 oral area 104a.Subsequently, the air of absorption between film 102 and the casting roller 103 is discharged in closely contact portion decompression, thereby the film made from molten resin 102 can be stablized with casting roller 103 and contacts.

In this case, according to the resin kind, if T pressing mold 101 is too little with casting roller 103 spacings, then the molten resin orientation is because expansion can not conversion, and resin cooling curing on casting roller 103 just is so can not reach diaphragm desirable characteristics (film characteristics).In addition, under T pressing mold 101 and the very little situation of casting roller 103 spacings, the micro-surperficial irregularity that 101 outlets of T pressing mold take place is unreducible in the spacing of expansion, and behind cooling curing, it is coarse that the surface still keeps, thereby has reduced diaphragm quality (film quality).

So,, can take the method for a kind of T of change pressing mold 101 and casting roller 103 spacings according to the resin kind in order to reach diaphragm desirable characteristics (film characteristics).But, Figure 31 and shown in Figure 32 before in the equipment, owing to inhale chamber 104 and T press mold 101 relative fixed, so change T pressing mold 101 and casting roller 103 spacings are met difficulty.

For example, Figure 31 and shown in Figure 32 before in the equipment, even reduce casting roller 103, increase T pressing mold 101 and casting roller 103 spacings, the seal clearance 104b that inhales chamber 104 and casting roller 103 is enlarged, the required suction of also very difficult acquisition, so that can not get rid of the air that absorbs between film 102 and the casting roller 103, thereby film 102 is stably closely contacted with casting roller 103.

In addition, according to test, if adopt casting apparatus form film 102 based on above-mentioned suction chamber 104, the vacuum space configuration that after discharging T pressing mold 101, forms immediately of film shape molten resin then, casting roller 103 outer circumference surfaces and inhale chamber 104 terminal parts or this vacuum space has or not outer gas stream to enter, according to such as the material resin kind, molten resin viscosity, situations such as film 102 thickness and shaping speed all can be stablized tight contact conditions to film 102 and casting roller 103 and exert an influence.Particularly resin stretched viscosity is under lower situation, and the state that outer gas stream enters the vacuum space can influence film 102 and closely contact with the stable of casting roller 103.

For this reason, problem occurred, for example film 102 vibrates (swing) or is brought into and inhales in the chamber 104, and particularly under the film 102 high-speed molding situations, influence becomes more serious.For example, Figure 33 represents that outer gas stream flows into state (dotted arrow is represented air-flow) along Figure 31 S-S line cross section, and as shown in figure 33, owing to produce dynamic pressure in the B2 specified portions, and causing eddy current because of suction in part shown in the B1, hinder film to quicken moulding and make film 102 vibrate (swing) or be brought in the suction chamber 104.

Development the objective of the invention is to address the above problem, so an object of the present invention is to release a kind of casting apparatus for formation of resin-made membrane, can realize stable decompression in enough suctions chamber, and do not depend on the spacing dimension of pressing mold and chill roll and correctly set up distance between pressing mold and the chill roll, no matter be which kind of resin, thereby can guarantee required film characteristics, improve the resin-made membrane quality.

For this purpose, resin system diaphragm casting apparatus for formation of the present invention includes the pressing mold that molten resin is extruded into film, the film that outer circumference surface acceptance is extruded from pressing mold, and the chill roll of usefulness is carried in cooling simultaneously, aspirate the suction chamber that air is used between film and the chill roll in addition, so that film is closely contacted with the chill roll surface, here, inhaling chamber tripping mould is provided with separately, and layout forms the seal clearance with respect to chill roll, one circumference travel mechanism is set in addition, makes and inhale the chamber under the required seal clearance state of maintenance, move along the chill roll circumferencial direction.

Can adopt following mechanism (1) to (3), as circumference travel mechanism:

(1) have the mechanism of actuator, its nearside is supported, and can rotate around the chill roll gyroaxis, inhales the chamber and then firmly is fixed on terminal surface;

(2) have the mechanism of guide, link to each other with bogie side frame, rotatable support chill roll side end enables to inhale the chamber along the guiding of chill roll circumferencial direction;

(3) have the mechanism of actuator, its nearside is supported, and can rotate around the chill roll gyroaxis, and other has a guide, links to each other with this actuator terminal surface, along chill roll circumferencial direction guiding suction chamber.

On the other hand, also can propose a kind of radial drive mechanism, move radially along chill roll and inhale the chamber, adjust required seal clearance, also be suitable.

Circumference travel mechanism and move radially mechanism and can take following structure (4) to (6);

(4) actuator is equipped with in circumference travel mechanism, and its nearside is supported, and can rotate around the chill roll gyroaxis, inhales the chamber and then firmly is fixed on terminal surface, moves radially mechanism and then is located at suction chamber and actuator assembled portion;

(5) guide is equipped with in circumference travel mechanism, link to each other with bogie side frame, but pivoting support chill roll side end enable to inhale the chamber along chill roll circumferencial direction guiding, and constitute move radially mechanism as the mechanism that moves radially guide along chill roll;

(6) actuator is equipped with in circumference travel mechanism, and its nearside is supported, and can rotate around the chill roll gyroaxis, is contained in the guide of actuator terminal surface, inhales the chamber along the guiding of chill roll circumferencial direction, moves radially mechanism and then is contained in guide and driving mechanism coupling part.

In addition, having an elastic sealing element in addition places in the middle of pressing mold and the suction chamber.

In this case; might make the elastic sealing element of putting run through width above the film overall with; constitute by bar-shaped elastic sealed body based on foaming agent; the whole surface coverage of foaming agent is surrounded by the glass cloth and the fixture of aluminium foil; fixture is fixed on elastic sealed body to be inhaled on chamber or the pressing mold, and enable closed pressing mold and suction cavity gap, and its mode is to use elastic force; elastic sealed body is tightly suppressed pressing mold or inhales the chamber, and be in contact with it.In addition, also might make the elastic sealing element of putting run through width, constitute with the corrosion resistant metal leaf spring above the film overall with; connect and inhale chamber or pressing mold, and enable closed pressing mold and suction cavity gap, its mode is to use elastic force; the metal leaf spring is tightly suppressed pressing mold or inhales the chamber, and be in contact with it.

In addition, can adorn a protective plate, screen and inhale chamber suction inlet portion end, enable to move along the thin-film width direction.In addition, also can adorn a suction nozzle, chamber suction inlet portion end side air is always inhaled in suction.In addition, also can adorn a protective plate, screen and inhale chamber suction inlet portion end, enable to move along the thin-film width direction, in addition, refill a suction nozzle, chamber suction inlet portion end side air is always inhaled in suction, also is suitable.

As mentioned above, in casting apparatus for formation of resin-made membrane of the present invention, inhale the chamber and separate with pressing mold, the tripping mould independently is provided with, and the suction chamber of design can lean on circumference travel mechanism, moves along the chill roll circumferencial direction, simultaneously required seal clearance between maintenance suction chamber and chill roll.

If adopt the circumference travel mechanism that has actuator like this, promptly its nearside is supported, and can rotate around the rotating shaft of chill roll, inhaling the chamber then firmly is fixed on the terminal surface, so, inhale the chamber and can move along the chill roll circumferencial direction, its mode is that actuator rotates around the chill roll gyroaxis.

In addition, if adopt the circumference travel mechanism with guide, this part is contained on the bogie side frame, and pivoting support chill roll side end is inhaled the chamber along the guiding of chill roll circumferencial direction, so, can be along guide, the chamber is inhaled in guiding, and chill roll is moved along the chill roll circumferencial direction.

In addition, the circumference travel mechanism that also has actuator and guide by employing, the former is supported by its nearside, can rotate around cooling back rotating shaft, the latter then connects the actuator terminal surface, inhales the chamber along the guiding of chill roll circumferencial direction, and the suction chamber is moved along the chill roll circumferencial direction, its mode is that actuator rotates around the chill roll gyroaxis, inhales the chamber and then guides along guide.

So, if pressing mold and chill roll spacing are too big, when the suction chamber leans on circumference travel mechanism along the circumferential direction mobile, can make and inhale chamber suction inlet (oral area) and closely contact start-up portion near between film and the chill roll, no matter pressing mold and chill roll spacing dimension, can guarantee required pressure reduction stage, therefore, reducing pressure in film and chill roll space, available suction chamber is stable finishes.Subsequently, might set up used pressing mold of any kind of resin and chill roll spacing rightly, guarantee required film characteristics, improve resin system diaphragm quality rapidly.

In this case, if elastic sealing element places pressing mold and inhales in the middle of the chamber, even pressing mold and chill roll spacing dimension or suction position, chamber change, elastic sealing element also can seal the pressing mold after the sort of variation and inhale gap between the chamber, therefore, pressing mold, the pressure reduction space air-tightness that film and suction chamber center on is guaranteed, so that the required pressure reduction stage of this pressure reduction space must reach.

In addition, if the elastic sealing element of placing runs through the width above the film overall with, tightly suppress pressing mold with elastic force, make to be in contact with it, sealing pressing mold and suction cavity gap are no matter inhale the variation of position, chamber, then elastic component one seals automatically surely and inhales chamber and pressing mold spacing, thereby pressing mold, the pressure reduction space air-tightness that film and suction chamber center on is guaranteed, necessarily reaches the required pressure reduction stage of pressure reduction space thus.In addition, before each film production operation beginning when making the suction chamber reach optimum state to carry out the position adjustment, necessarily prevent and by inhaling chamber and pressing mold spacing inflow suction chamber film to be vibrated because of air, thereby to make adjustment work become very easy, can carry out production operation immediately after the adjustment.

On the other hand, in another casting apparatus for formation of resin-made membrane of the present invention, inhaling the chamber can be under following state, promptly inhale the chamber and the chill roll seal clearance remains unchanged, inhaling chamber and chill roll seal clearance can adjust, the gap can seal with elastic sealing element in addition, no matter pressing mold and suction chamber spacing dimension circumferentially and radially move along chill roll.

Therefore, because can stablizing with the suction chamber, film and the decompression of chill roll gap reach, no matter pressing mold and chill roll spacing dimension, so pressing mold and chill roll spacing, resin to any kind of can both rationally be set up, and to guarantee required film characteristics, improves the resin-made membrane quality rapidly.

In addition, inhale chamber suction inlet portion end side air suction nozzle always if adopt the protective plate of the suction chamber suction inlet portion end of screening maybe can aspirate, so, because of suction enters the film that pressing mold is extruded, the space primary air that chill roll and suction chamber form can be controlled, thereby might suppress vibration of thin membrane (swing) or bring film into the suction chamber, therefore, the film of any kind of resin be stablized moulding can both accomplish.

Fig. 1 is a side view, specifically represents the first embodiment of the invention casting apparatus for formation of resin-made membrane;

Fig. 2 is a side elevation view, specifically represents the second embodiment of the invention casting apparatus for formation of resin-made membrane;

Fig. 3 is a side elevation view, specifically represents the third embodiment of the invention casting apparatus for formation of resin-made membrane;

Fig. 4 is a perspective view, specifically represents the structure and the assembling situation of elastic sealing element in the fourth embodiment of the invention casting apparatus for formation of resin-made membrane;

Fig. 5 is the side-looking vertical cross section, represents the structure and the assembling situation of the 4th embodiment elastic sealing element;

Fig. 6 is the side-looking vertical cross section, represents the installation situation of the 4th embodiment elastic sealing element;

Fig. 7 is the side-looking vertical cross section, represents the elastic sealing element installation situation that size is different with Fig. 6 seal in the 4th embodiment casting apparatus;

Fig. 8 A is the side-looking vertical cross section to Fig. 8 C, all represents the structure and the assembling situation of elastic sealing element in the fifth embodiment of the invention casting apparatus for formation of resin-made membrane;

Fig. 9 is a side elevation view, specifically represents the sixth embodiment of the invention casting apparatus for formation of resin-made membrane;

Figure 10 is a front elevation view, specifically represents the sixth embodiment of the invention casting apparatus for formation of resin-made membrane;

Figure 11 is a perspective view, represents the structure and the assembling situation of the 6th embodiment elastic sealing element;

Figure 12 is the side-looking vertical cross section, represents the structure and the assembling situation of the 6th embodiment elastic sealing element;

Figure 13 is the side-looking vertical cross section, represents the installation situation of the 6th embodiment elastic sealing element;

Figure 14 is the side-looking vertical cross section, represents the elastic sealing element installation situation that size is different with Figure 13 seal in the 6th embodiment casting apparatus;

Figure 15 is a side elevation view directly perceived, can be used for illustrating the 6th embodiment operation example;

Figure 16 is a side elevation view directly perceived, can be used for illustrating the 6th embodiment operation example;

Figure 17 A is the side-looking vertical cross section to Figure 17 C, all represents the structure and the assembling situation of elastic sealing element in the seventh embodiment of the invention casting apparatus for formation of resin-made membrane;

Figure 18 is a side elevation view, specifically represents the eighth embodiment of the invention casting apparatus for formation of resin-made membrane;

Figure 19 is a perspective view, represents the structure and the assembling situation of the 8th embodiment protective plate and elastic sealing element;

Figure 20 specifies extraneous air and flows into state along Figure 18 P-P line cross section;

Figure 21 is a side elevation view, specifically represents the ninth embodiment of the invention casting apparatus for formation of resin-made membrane;

Figure 22 is a perspective view, represents the structure and the assembling situation of the 9th embodiment suction nozzle and elastic sealing element;

Figure 23 specifies extraneous air and flows into state along Figure 21 Q-Q line cross section;

Figure 24 is a side elevation view, specifically represents the tenth embodiment of the invention casting apparatus for formation of resin-made membrane;

Figure 25 is a perspective view, represents the tenth embodiment suction nozzle, the structure of protective plate and elastic sealing element and assembling situation;

Figure 26 specifies extraneous air and flows into state along Figure 24 R-R line cross section;

Figure 27 is a side elevation view, specifically represents the eleventh embodiment of the invention casting apparatus for formation of resin-made membrane;

Figure 28 is a front elevation view, specifically represents the eleventh embodiment of the invention casting apparatus for formation of resin-made membrane;

Figure 29 is a side elevation view, specifically represents the twelveth embodiment of the invention casting apparatus for formation of resin-made membrane;

Figure 30 is a front elevation view, specifically represents the twelveth embodiment of the invention casting apparatus for formation of resin-made membrane;

Figure 31 is a side elevation view, the casting apparatus for formation of resin-made membrane of technology before the concrete expression;

Figure 32 is a front elevation view, the casting apparatus for formation of resin-made membrane of technology before the concrete expression;

Figure 33 specifies extraneous air and flows into state along Figure 31 S-S line cross section.

With reference to the accompanying drawings the best embodiment of the present invention is described.

In first embodiment, Fig. 1 is a side elevation view, concrete expression first embodiment of the invention casting apparatus for formation of resin-made membrane, as shown in Figure 1, the first embodiment casting apparatus includes T pressing mold (mould) 1, be used for that molten resin is extruded into membranaceous or sheet film (diaphragm) 2 with extruder (do not have diagram), other has casting roller (chill roll) 3, be used on outer circumference surface, accepting the film 2 that T pressing mold 1 is extruded, with its cooling and conveying, inhale chamber 4 in addition, be used to aspirate air between film 2 and the casting roller 3, film 2 is stably closely contacted with casting roller 3 surfaces.

In this embodiment, inhaling chamber 4 is provided with separately from T pressing mold 1.And, set up suction chamber 4 along casting roller 3 outer circumference surfaces, inhaling the required seal clearance 4d of formation between chamber 4 and casting roller 3 outer circumference surfaces.Set up sealing gap 4d size (spacing), guarantee the suction (pressure reduction stage) of film 2 and casting roller 3 tight contact portions, casting roller 3 is rotated.

In addition, as before technology, a vavuum pump 5 is arranged, communicate with inhaling chamber 4, during these vavuum pump 5 operations, air aspirates by inhaling chamber 4 oral area 4a between film 2 and the casting roller 3.In addition, the oral area 4a (suction inlet) of formation runs through film 2 whole width, near the part that film 2 begins and casting roller 3 outer circumference surfaces closely contact.

In addition, in this embodiment, actuator 7 makes suction chamber 4 move along casting roller 3 circumferencial directions as circumference travel mechanism, keeps required seal clearance 4d simultaneously.This actuator 7 constitutes like this, and promptly its nearside and the coaxial supporting of 3 roll shafts of casting roller (gyroaxis) 3a can rotate around a roll shaft 3a (pressing Fig. 1 arrow A direction), and its terminal surface is then fixing with respect to inhaling chamber 4.

In addition, elastic sealed body (elastic sealing element) 6 places T pressing mold 1 middle with suction chamber 4, utilizes elastic sealing element 6 sealing T pressing molds 1 and inhales 4 gaps, chamber.

Because the first embodiment of the invention casting apparatus for formation of resin-made membrane constitutes by above-mentioned requirements, so there is not diagram, the extruder molten resin is extruded into membranaceous or sheet film 2 by T pressing mold 1, receives on casting roller 3 outer circumference surfaces cooling forming again.

At this moment, if air in the chamber 4 is inhaled in vavuum pump 5 suctions, then the air of tight contact portion between film 2 and the casting roller 3 is sucked by inhaling chamber 4 oral area 4a.Therefore,, discharge the air that absorbs between film 2 and the casting roller 3, cause the film made from molten resin 2 stably closely to contact with casting roller 3 near the space decompression of this tight contact portion.

So,,, consider T pressing mold 1 and casting roller 3 spacing situations of change according to the resin kind in order to reach required diaphragm characteristics (film characteristics).For example, retreat (decline) casting roller 3, might increase T pressing mold 1 and casting roller 3 gaps (spacing).Otherwise, under the former equipment situation, if only retreat casting roller 3, except meeting increases film 2 and inhales the 4 oral area 4a spacings of chamber, also cause and inhale chamber 4 and casting roller 3 seal clearance 4d increase, make the inaccessible required pressure reduction stage in space (pressure reduction space) near tight contact portion between film 2 and the casting roller 3.

In this embodiment, suction chamber 4 separates with T pressing mold 1, is provided with separately from T pressing mold 1, and by using actuator 7, is keeping between suction chamber 4 and the casting roller 3 under the required seal clearance 4d situation, and suction chamber 4 is moved along casting roller 3 circumferencial directions.

Therefore, if T pressing mold 1 is too big with casting roller 3 spacings, then actuator 7 counterclockwise, move suction chamber 4 around a roll shaft 3a, be advanced to assigned position, closely contact the beginning part so that inhale chamber 4 suction inlets (oral area 4a) near between film 2 and the casting roller 3, therefore, film 2 and suction chamber 4 oral area 4a spacings are dwindled.Otherwise if T pressing mold 1 is too little with casting roller 3 spacings, then actuator 7 clockwise directions move suction chamber 4 around a roll shaft 3a, retreat into assigned position.

And, at this moment,, actuator 7 inhales chamber 4 even rotating owing to inhale chamber 4 along the 3 outer circumference surface settings of casting roller, also can keep required seal clearance 4d between suction chamber 4 and the casting roller 3.

As mentioned above, owing to set up the position of inhaling chamber 4, maintain seal clearance 4d, no matter T pressing mold 1 and casting roller 3 spacing dimensions, pressure reduction space can reach required pressure reduction stage, thereby reduce pressure available suction chamber 4, space is stably finished.

In addition, as mentioned above, according to changing the mode of T pressing mold 1 with casting roller 3 spacing dimensions or suction 4 positions, chamber, because in the present embodiment, it is middle with suction chamber 4 that elastic sealed body 6 is placed on T pressing mold 1, even T pressing mold 1 changes with inhaling chamber 4 spacings (gap), elastic sealing element also can seal T pressing mold 1 and inhale the gap that changes between the chamber 4.Therefore, T pressing mold 1, film 2 is kept with the pressure reduction space air-tightness that suction chamber 4 centers on, thereby makes this depressor area necessarily reach required pressure reduction stage.

In passing, around a roll shaft 3a, revolution drives actuator 7, makes to inhale chamber 4 rotation operations, can rely on manual operation, also can be by there not being diagram driving mechanism (drive motor).

As mentioned above, in the first embodiment of the invention casting apparatus for formation of resin-made membrane, no matter T pressing mold 1 and casting roller 3 gap sizes, stably finish in the available suction chamber 4 of reducing pressure, space between film 2 and the casting roller 3, so, all might rationally set up T pressing mold 1 and casting roller 3 spacings for any kind of resin, thereby guarantee required diaphragm characteristics (film characteristics), improve resin-made membrane (film or sheet) 2 quality rapidly.

In a second embodiment, Fig. 2 specifically represents the second embodiment of the invention casting apparatus for formation of resin-made membrane.Though the structure of the second embodiment casting apparatus equipment structure with first embodiment shown in Figure 2 substantially is the same, but in a second embodiment, adopt a guide 8, as circumference travel mechanism, make and inhale chamber 4 under the required seal clearance 4d situation of maintenance, can move along casting roller 3 circumferencial directions.

This guide 8 is contained on the bogie side frame 8b, enables pivoting support casting roller 3 side parts.One elongated poroid guide rail 8a is arranged on the guide 8, make the engagement with two pivot pins (roller) 4c, 4c then installs to and inhales 4 sides, chamber, inhales chamber 4 along casting roller 3 circumferencial directions (pressing Fig. 2 B direction of arrow) guiding.

In the second embodiment casting apparatus, except above-mentioned circumference travel mechanism, its structure is the same with first embodiment all, thereby explanation is omitted.

Because the structure of second embodiment of the invention casting apparatus for formation of resin-made membrane as previously mentioned, so when T pressing mold 1 and casting roller 3 spacings are too big, inhale chamber 4 counterclockwise (by scheming direction left), 8 elongated poroid guide rail 8a move along guide, be advanced to assigned position, cause and inhale chamber 4 suction inlets (oral area 4a) and closely contact the beginning part near between film 2 and the casting roller 3, thus the spacing of shortening film 2 suction chamber 4 oral area 4a.Otherwise, when T pressing mold 1 and casting roller 3 spacings too hour, then along guide 8 elongated poroid guide rail 8a, clockwise direction (press Fig. 2 to right) moves suction chamber 4, retreats into assigned position.

In addition,,, move along guide 8 elongated poroid guide rail 8a, between suction chamber 4 and casting roller 3 outer circumference surfaces, also can keep required seal clearance 4d although inhale chamber 4 owing to suction chamber 4 is set along casting roller 3 outer circumference surfaces as the situation of first embodiment.

In passing, inhaling chamber 4 can be manual along moving of guide rail 8a, also can be undertaken by using driving mechanism (not having diagram).

So the second embodiment of the invention casting apparatus for formation of resin-made membrane has the effect same with first embodiment equally.

In the 3rd embodiment, Fig. 3 specifically represents the third embodiment of the invention casting apparatus for formation of resin-made membrane.Though basic the same with first embodiment shown in Figure 3 of the structure of casting apparatus, in the 3rd embodiment, actuator 9 and guide 10 are used as circumference travel mechanism, and suction chamber 4 is moved along casting roller 3 circumferencial directions, keep required seal clearance 4d simultaneously.

In this case, actuator 9 is set like this, make the coaxial supporting of 3 roll shafts of its nearside and casting roller (gyroaxis) 3a, can rotate around a roll shaft 3a (pressing Fig. 3 D direction of arrow), guide 10 then connects terminal surface, and this guide 10 has an elongated poroid guide rail 10a, makes with two pivot pins (or roller) 4c to mesh, 4c then installs to and inhales 4 sides, chamber, inhales chamber 4 along casting roller 3 circumferencial directions (pressing Fig. 3 arrow C direction) guiding.

Because the structure of third embodiment of the invention casting apparatus for formation of resin-made membrane as previously mentioned, so when T pressing mold 1 and casting roller 3 spacing dimensions are too big, at first make and inhale chamber 4 contrary inserting needle directions with actuator 9, move around a roll shaft 3a, arrive correct position, carry out coarse adjustment, and then suction chamber 4 is moved along guide 10 elongated poroid guide rail 10a, place assigned position, finely tune, place near closely contacting between film 2 and the casting roller 3 and begin part thereby will inhale chamber 4 suction inlets (oral area 4a).

Otherwise, when T pressing mold 1 and casting roller 3 spacing dimensions too hour, carry out coarse adjustment at first like this, promptly use actuator 9, clockwise direction moves suction chamber 4 around a roll shaft 3a, retreats into correct position, finely tune again subsequently, suction chamber 4 is moved along guide 10 elongated poroid guide rail 10a, place assigned position.

In addition, at this moment, as the situation of first embodiment, owing to suction chamber 4 is set along casting roller 3 outer circumference surfaces, be driven part 9 rotations although inhale chamber 4, and move, between suction chamber 4 and casting roller 3 outer circumference surfaces, still can keep required seal clearance 4d along guide 10 elongated poroid guide rail 10a.

In passing, around a roll shaft 3a, revolution drives actuator 9, rotates suction chamber 4 and can rely on manual operation, also can be by there not being diagram driving mechanism (drive motor).Equally, inhale chamber 4 and can rely on manual operation around moving of guide rail 10a, can be by there not being the diagram driving mechanism yet.

Therefore, the third embodiment of the invention casting apparatus for formation of resin-made membrane can obtain the effect same with first embodiment equally, and because in the 3rd embodiment, inhale 4 location, chamber and take two steps, be actuator 9 coarse adjustment and guide 10 fine settings, thereby the location reach very pinpoint accuracy.

Though in above-mentioned first to the 3rd embodiment, elastic sealing element 6 can seal T pressing mold 1 and inhale 4 gaps, chamber, other structures also are suitable for, as long as can seal T pressing mold 1 and inhale 4 gaps, chamber, although gap size changes subsequently to some extent, and it is external to remove caoutchouc elasticity, and bellows part etc. also can be accepted.

In addition, in the above-described embodiments,, can keep the circumference travel mechanism of required seal clearance 4d to describe three kinds of patterns again: actuator 7 although inhale chamber 4 as moving along casting roller 3 circumferencial directions; Guide 8; With actuator 9 and guide 10 combinations, but the invention is not restricted to this, other mechanisms also can accept, as long as keeping under the required seal clearance 4d situation, suction chamber 4 are moved along casting roller 3 circumferencial directions.

In the 4th embodiment, Fig. 4 represents fourth embodiment of the invention casting apparatus for formation of resin-made membrane major part respectively to Fig. 7.In these figure, Fig. 4 and Fig. 5 are perspective view and side-looking vertical cross section, structure and the assembling situation of all representing elastic sealing element, Fig. 6 is the side-looking vertical cross section, the installation situation of expression elastic component, Fig. 7 is the side-looking vertical cross section, the expression size elastic sealing element installation situation different with Fig. 6 seal.

In described the 4th embodiment, place T pressing mold 1 and elastic sealed body 6 structures of inhaling 4 centres, chamber to give more detailed description to above-mentioned first to the 3rd embodiment.In illustration, the numbering identical with top used numbering represented same part, so explanation is omitted.In addition, among the 4th to the 12 embodiment, will be in the suction chamber (vacuum box) that first to the 3rd embodiment is designated by numeral 4 to number 40 expressions, elastic sealing element 6 will be described with elastic sealing element 50.

As Fig. 4, shown in 5 and 6, the 4th embodiment casting apparatus is inhaled chamber 40 execution and is inhaled chamber 4 identical functions with first to the 3rd embodiment, by shell 41 and

labyrinth

42,43 form, and the former comprises

upper wall

41a, 41b, rear wall 41c and left and right sidewall 41d, the latter then firmly is fixed on respectively on left and right sidewall 41d outer surface bottom and the rear wall 41c.Labyrinth 43 is fixed on the left and right sidewall 42d.

And, to inhale 40 fronts, chamber (Fig. 5 and 6 left sides) and open wide, the suction inlet of formation (oral area 40a) is in the middle of suction chamber 40 upper wall 41a and casting roller 3 outer circumference surfaces.In addition, shell 4 ' except that suction inlet 40a, by the sealing of casting roller 3 outer circumference surfaces, forms the 40b of suction-chamber from following between shell 41 and casting roller 3.

Labyrinth

42,43 separates under the state a little being in each other, leans against on casting roller 3 outer circumference surfaces, and the air that might suppress to come below rear wall 41c and left and right sidewall 41d is flowed into.In passing, also might adopt rubber seal, felt seal spare etc. replace

labyrinth

42,43.

The 40b of suction-chamber is by firmly linking to each other with the fixing suction pipe 60 of upper wall 41b and vavuum pump 5 (referring to Fig. 1 to Fig. 8).

Whole suction chamber 40, can be rotated along casting roller 3 outer circumference surfaces referring to figs. 1 through Fig. 3 described circumference travel mechanism and the supporting of casting roller 3 coaxial rotatings by any one, keeps required seal clearance simultaneously.

In this embodiment, the elastic sealing element 50 of setting runs through the width above film 2 overall withs,, is made up of elastic sealed body 51 and fixture (counterpart) 52,53 to shown in Figure 7 as Fig. 4.

Elastic sealed body 51 is used foaming agent, and for example polyimide foam is made, because its hear resistance is strong, the impact elasticity height, compression set is little, makes the bar-shaped configuration of cross section semicircle, its positive glass cloth (aluminium foil adheres on the glass cloth by adhesive is whole) that is surrounded by aluminium foil that covers.

This elastic sealed body 51 is fixed on to be inhaled on the chamber 40, and its mode is the protuberance 52b that the bottom is clamped in fore-and-

aft direction fixture

52,53, and in the middle of the 53b, and 52,53 of fixtures are fixedly tightened with respect to inhaling chamber 40 upper wall 41a with construction bolt 55.

In addition, as shown in Figure 6 and Figure 7, elastic sealing element 50 sealing T pressing molds 1 and suction 40 gaps, chamber, its mode is an elastic force pressurization elastic sealed body 51, makes with T pressing mold 1 to contact.

The fixture of arranging 53 is on fixture 52, its state is that the fixture 52 elongated hole 52a that opens opens elongated hole 53a with fixture 53 sides and aims at, construction bolt 55 inserts these elongated hole 52a by packing

ring

54,53a, and tighten with respect to inhaling chamber 40 upper wall 41a,

cause fixture

52,53 overall fixed, as shown in Figure 5, will on the plate 41e of back, be made for blind screw thread with the upper wall 41a side internal thread of construction bolt 55 engagements.

As shown in Figure 7, the purpose of making elongated hole 52a is to change fixture 53 positions, inhales on the chamber 40, in addition so that the different elastic sealed body of size 51 can be installed to, elongated hole 53a then under fixture 52 side elongated hole 52a cooperate, is used to adjust elastic sealing element 50 and the installation site of inhaling chamber 40.Like this, when assembling, elastic sealing element 50 can move on to position shown in Fig. 6 and Fig. 7 dotted line A3 from position shown in Fig. 6 and Fig. 7 solid line.

In Fig. 6, according to the equipment of the 4th embodiment, for example, because the thinner thickness of film (film, sheet) 2, faint suction just are enough to satisfy suction chamber 40 suction films 2, T pressing mold 1 is a short spacing with casting roller 3 shown in the event, in Fig. 7, according to the equipment of the 4th embodiment, for example, because film (film, sheet) 2 is very thick, inhale 40 pairs of film 2 suction in chamber require quite strong, so shown in T pressing mold 1 and casting roller 3 be long spacing.

In addition, though Fig. 1 has a gradient to the T pressing mold 1 lower surface configuration of equipment shown in Figure 3, launch (each illustration the right) from aperture horizontal plane to the outside, but in Fig. 6 and this embodiment shown in Figure 7, T pressing mold 1 lower surface configuration but there are two different gradient near extrusion film 2.But, the difference of these T pressing mold 1 lower surface configurations does not have Special Significance.In addition, elastic sealing element 50 is installed to T pressing mold 1 lower surface, again by elastic force pressurization, it also is suitable making with inhaling that chamber 40 upper surface side contact.

Secondly, the casting apparatus for formation of resin-made membrane operational circumstances to this structure of the 4th embodiment is described below.

Molten resin is extruded into film 2 by T pressing mold 1, is rolled onto on the casting roller 3 cooling forming again.Do not inhale chamber 40 if do not use, then the molten condition film 2 of casting roller 3 pulls shows to moving along Fig. 6 or Fig. 7 double dot dash line A1, and at this moment, air is inhaled between film 2 and the casting roller 3, thereby has reduced film 2 quality.

For this reason, inhale chamber 40 suction operation and produce negative pressure in film 2 (Fig. 6 and Fig. 7 the right) back, the reverse pull film 2 of pressure reduction with positive pressure forms causes film 2 to be in fixed position shown in Fig. 6 and Fig. 7 solid line, increased the angle that film 2 is guided to casting roller 3.

Because film 2 back produce negative pressure, so establish a dividing plate in film 2 back, with inhaling air between chamber 40 suction dividing plates and the film 2, if this compartment is off size suitable, then produce the wild effect of suction air vibration film 2, particularly shown in Fig. 6 arrow A 2, air by T pressing mold 1 with inhale between the chamber 40 in the inflow 40b of suction-chamber constantly, unstability must take place.

For this reason, adjust and inhale chamber 40 terminal parts, reach the optimum position that is difficult to take place wild effect,, need sealing T pressing mold 1 and inhale 40 gaps, chamber, change, also can prevent to produce external air inlet channel even inhale 40 positions, chamber for this adjustment.

In this embodiment, even inhaling chamber 40 upper surfaces and T pressing mold 1 lower surface spacing changes, elastic sealing element 50 also can strain, automatically continue both gaps of sealing, in Fig. 6 and Fig. 7, represent to inhale chamber 40 and move preceding elastic sealing element 50 profile profiles (the profile profile before T pressing mold 1 pressurizing and deformation) with double dot dash line.

In passing, if the position relationship change is too big between T pressing mold 1 and the casting roller 3, elastic sealing element 50 then replaces with the elastic sealing element of different size itself, adjusts.

So, in the fourth embodiment of the invention casting apparatus for formation of resin-made membrane, because sealing surely automatically, elastic sealing element 50 inhales chamber 40 upper surfaces and T pressing mold 1 lower surface gap, even inhaling 40 positions, chamber changes, T pressing mold 1, the pressure reduction space air-tightness that film 2 and suction chamber 40 center on is also guaranteed, thereby this pressure reduction space reaches required pressure reduction stage surely.

In addition, as mentioned above, when the adjustment of optimum condition position is carried out in suction chamber 40 before each film (film, sheet) production operation begins, elastic sealing element 50 also one seals suction chamber 40 upper surfaces and T pressing mold 1 lower surface gap surely automatically, so, change even inhale 40 positions, chamber, might prevent necessarily that also film 2 from vibrating owing to air flows into suction chamber 40 from this gap, thereby adjustment work becomes very convenient, and production operation just can be begun after adjustment immediately.

In the 5th embodiment, Fig. 8 A is the side-looking vertical cross section to Fig. 8 C, all represents the structure and the assembling situation of elastic sealing element in the fifth embodiment of the invention casting apparatus for formation of resin-made membrane.

In described the 5th embodiment, as sealing T pressing mold 1 with inhale the elastic sealing element that 40 gaps, chamber are used, adopt Fig. 8 A to Fig. 8 C arbitrary shown in leaf spring 56a to 56c, replacement is in the past with reference to the elastic sealing element 50 of Fig. 4 in described the 4th embodiment casting apparatus of Fig. 7.Other parts are all the same with part among the 4th embodiment.

Leaf spring 56a all uses anti-corrosion thin metal (thickness of slab is less than 1mm) to 56c like this, make as stainless steel, layout run through the width that surpasses film 2 overall withs, be contained in by construction bolt 55 again and inhale on the 40 upper wall 41a of chamber.In addition, each metal leaf spring 56a pressurizes with elastic force to 56c, make with dip mold 1 lower surface to contact, thus sealing T pressing mold 1 lower surface and suction 40 upper surface gaps, chamber.

The configuration of leaf spring 56a shown in Fig. 8 A is that its terminal part expand into inverse-arc shape, and leaf spring 56b is configured as dihedral shown in Fig. 8 B, and a curved portions is arranged at top, and that leaf spring 56c shown in Fig. 8 C is configured as is hook-shaped, and terminal surface up.In each illustration, represent and T pressing mold 1 juxtaposition metamorphose situation with double dot dash line.

These leaf springs 56a to 56c can by elastic force make with T pressing mold 1 lower surface with inhale chamber 40 upper surfaces and contact, closing gap, therefore, configuration is not limited to Fig. 8 A to shown in Fig. 8 C those.And each leaf spring 56a can be contained in T pressing mold 1 lower surface to 56c, and simultaneously with elastic force pressurization, it also is suitable making with inhaling that chamber 40 upper surface side contact.

In addition, if the position relationship change is too big between T pressing mold 1 and the casting roller 3, then each leaf spring 56a uses the leaf spring of different size to replace to 56c itself, adjusts.

So to 56c, the fifth embodiment of the invention casting apparatus for formation of resin-made membrane has the effect same with the 4th embodiment to employing Fig. 8 A equally to the 56a of leaf spring shown in the 8C.

In the 6th embodiment, Fig. 9 is the illustration of sixth embodiment of the invention casting apparatus for formation of resin-made membrane to Figure 16.In these illustrations, Fig. 9 and Figure 10 are respectively side elevation view directly perceived and front elevation view directly perceived, Figure 11 and Figure 12 are perspective view and side-looking vertical cross section, structure and the assembling situation of representing this embodiment elastic sealing element respectively, Figure 13 is the side-looking vertical cross section, the installation situation of expression elastic sealing element, Figure 14 is the side-looking vertical cross section, the expression size elastic sealing element installation situation different with Figure 13 seal, Figure 15 and Figure 16 are side elevation view directly perceived, and the operation example of this embodiment all is described.In these illustrations, the numbering identical with top explanation represents that this part is identical or consistent, so explanation is often omitted.

As depicted in figs. 1 and 2, the 6th embodiment casting apparatus includes T pressing mold (mould) 1 equally, be used for being extruded into membranaceous extruder (not having diagram) molten resin or sheet film 2, other has casting roller (chill roll) 3, be used on outer circumference surface, accepting the film 2 that T pressing mold 1 is extruded, with its cooling and conveying, inhale chamber 40 in addition, be used to aspirate air between film 2 and the casting roller 3, film 2 is stably closely contacted with casting roller 3 surfaces, and in addition, casting roller 3 is bearing on the roll shaft 16, can rotate with respect to bogie side frame 17, horizontal direction moves the roller 18 that this equipment uses and is contained in bogie side frame 17 bottoms.

In this embodiment, be provided with separately from T pressing mold 1 equally and inhale chamber 40, and, inhale chamber 40 and constitute along casting roller 3 outer circumference surfaces.Inhaling the required seal clearance of formation between chamber 40 and casting roller 3 outer circumference surfaces, set up this gap size (spacing), guarantee film 2 and the casting roller 3 required suction of tight contact portion (pressure reduction stage), casting roller 3 is rotated.

As Figure 11, shown in 13 and 14, inhale the structure in chamber 40 with the same with reference to Fig. 4 in the past to the suction chamber 40 of described the 4th embodiment of Fig. 7.

Vavuum pump 5 links to each other with suction chamber 40 by suction pipe 60, and vavuum pump 5 is when operation, and air is by inhaling chamber 40 suction inlets (oral area) 40a suction between film 2 and the casting roller 3.In addition, the suction inlet 40a that makes runs through film 2 overall withs, near the part that film 2 begins and casting roller 3 outer circumference surfaces closely contact.

In addition, in the 6th embodiment, as the situation of first embodiment, actuator 110 moves suction chamber 40 as circumference travel mechanism along casting roller 3 circumferencial directions, keeps required seal clearance simultaneously.This actuator 110 is constructed like this, and promptly its nearside and 3 roll shafts of casting roller (gyroaxis), 16 coaxial supportings can rotate (Fig. 9 arrow A direction) around roll shaft 16, and its terminal surface is fixed on and inhales on the chamber 40 simultaneously.

In addition, two elongated hole 110a are arranged on the actuator 110, radially be provided with along casting roller 3, the bolt 11 that adjustment is passed on these elongated hole 110a is tightened the position, with respect to actuator 110 suction chamber 40 is installed, enable to move radially along casting roller 3, that is to say, adjustable like this block cast is moulded roller 3 outer circumference surfaces and is inhaled chamber 40 required seal clearances.The mechanism that moves radially that constitutes has above-mentioned elongated hole 110a and bolt 11.In Figure 10, only represent width end side of present embodiment equipment, and the structure of other end side is all the same.

In addition, elastic sealing element 50 places T pressing mold 1 middle with suction chamber 40, and T pressing mold 1 is sealed with elastic sealing element 50 with suction chamber 40 spacings.

The layout of this elastic sealing element 50 also runs through the width above film 2 overall withs as arriving described the 4th embodiment elastic sealing element 50 of Fig. 7 with reference to Fig. 4, is made of elastic sealing element 51 and fixture (counterpart) 52,53, arrives shown in Figure 14 as Figure 11.

aft direction fixture

ring

54,53a, and tighten with respect to inhaling chamber 40 upper wall 41a,

cause fixture

52,53 overall fixed.As shown in figure 12, will on the plate 41e of back, be made for blind screw thread with the upper wall 41a side internal thread of construction bolt 55 engagements.

As shown in figure 14, the purpose of making elongated hole 52a is to change fixture 53 positions, inhales on the chamber 40 so that the different elastic packing physical efficiency of size is installed to.

At Fig. 9, in 13 and 15, according to the equipment of the 6th embodiment, for example because the thin thickness of film 2, faint suction just is enough to satisfy inhales chamber 40 suction films 2, thus shown in T pressing mold 1 and casting roller 3 be short spacing.In Figure 14 and Figure 16, according to the equipment of the 6th embodiment, for example because film 2 is very thick, inhale 40 pairs of film 2 suction in chamber require quite strong, so shown in T pressing mold and casting roller 3 be long spacing.

Secondly, the casting apparatus for formation of resin-made membrane operational circumstances to this structure of the 6th embodiment is described below.

The operational circumstances of the 6th embodiment equipment is identical with first embodiment shown in Figure 1 basically.In this embodiment,, retreat casting roller 3, increase T pressing mold 1 and casting roller 3 spacings as Figure 15 and shown in Figure 16.But, if only retreat casting roller 3, then increasing film 2, casting roller 3 outer circumference surfaces and the side oral area of inhaling chamber 40 terminal parts formation reach required pressure reduction stage like this and meet difficulty.

For this reason, as shown in figure 15, the suction chamber 40 that is contained on the actuator 110 is advanced to assigned position, the side oral area is diminished, the air that to inhale in the chamber 40 with vavuum pump 5 is drawn into required pressure reduction stage again, causes the film 2 of molten condition can stably closely contact with casting roller 3 immediately after T pressing mold 1 is extruded.

In addition, as mentioned above, in this embodiment, even change T pressing mold 1 and casting roller 3 spacing dimensions or suction 40 positions, chamber, and T pressing mold 1 and suction 40 gaps, chamber (spacing) are changed, also to place elastic sealing element 50 T pressing mold 1 middle with suction chamber 40, therefore, the gap after elastic sealing element 50 can seal T pressing mold 1 and inhale chamber 40 the sort of variations.

In this embodiment, even suction chamber 40 upper surfaces and T pressing mold 1 lower surface spacing change, elastic sealing element 50 also can strain, both gaps of continuation sealing automatically.Therefore, T pressing mold 1, film 2 is guaranteed that with the pressure reduction space air-tightness that suction chamber 40 centers on like this, pressure reduction space one reaches required pressure reduction stage surely.In Figure 13 and Figure 14, with dashed lines 50a represents to inhale chamber 40 and moves the profile profile of preceding elastic sealing element 50 (the profile profile before T pressing mold 1 pressurizing and deformation).

In passing, as Figure 14 or shown in Figure 16, if the position relationship change is too big between T pressing mold 1 and the casting roller 3, elastic sealing element 50 then replaces with the elastic sealing element of different size itself, adjusts.

Elastic sealing element 50 is contained in T pressing mold 1 lower surface, with the elastic force pressurization, makes with inhaling chamber 40 upper surface side to contact again, and be suitable equally.

So, in the sixth embodiment of the invention casting apparatus for formation of resin-made membrane, because inhaling chamber 40 can move along casting roller 3 circumferencial directions, keep simultaneously with respect to casting roller 3 required seal clearances, also can move radially in addition along casting roller 3, therefore, no matter gap size, except that elastic sealing element 50 can seal T pressing mold 1 lower surface and inhale the 40 upper surface gaps, chamber, also can adjust the seal clearance of inhaling chamber 40 and casting roller 3.

Therefore, available suction chamber 40 stable the reaching owing to reduce pressure in film 2 and casting roller 3 spaces, no matter T pressing mold 1 and casting roller 3 spacing dimensions, so T pressing mold 1 can both rationally be set up the resin of any kind of with casting roller 3 spacings, thereby can guarantee required diaphragm characteristics (film characteristics), improve resin-made membrane (film or sheet) 2 quality rapidly

In the 7th embodiment, Figure 17 A is the side-looking vertical cross section to Figure 17 C, all represents the structure and the assembling situation of elastic sealing element in the seventh embodiment of the invention resin-made membrane shaping casting apparatus.

In the 7th embodiment, replace above-mentioned the 6th embodiment elastic sealing element 50, adopt as Figure 17 A before shown in Figure 17 C as described in the 5th embodiment identical arbitrary leaf spring 56a to 56c.Other parts all with the 6th embodiment in the same.

These leaf springs 56a all uses anti-corrosion thin metal (thickness of slab 1mm or less than 1mm) to 56c, make as stainless steel, as the situation among the 5th embodiment, and arrange run through the width that surpasses film 2 overall withs, be contained in by construction bolt 55 again and inhale on the 40 upper wall 41a of chamber.In addition, each metal leaf spring 56a pressurizes with elastic force to 56c, make with T pressing mold 1 lower surface to contact, thus sealing T pressing mold 1 lower surface and suction 40 upper surface gaps, chamber,

The configuration of leaf spring 56a shown in Figure 17 A is that its terminal part expand into inverse-arc shape, and leaf spring 56b is configured as dihedral shown in Figure 17 B, and a curved portions is arranged at top, and leaf spring 56c shown in Figure 17 C is configured as hook-shaped, terminal surface in each illustration, is represented and T pressing mold 1 juxtaposition metamorphose situation with double dot dash line up.

These leaf springs 56a to 56c can by elastic force make with T pressing mold 1 lower surface with inhale chamber 40 upper surfaces and contact, closing gap, therefore, configuration is not limited to Figure 17 A to shown in Figure 17 C those.And each leaf spring 56a can be contained in T pressing mold 1 lower surface to 56c, with the elastic force pressurization, make with inhaling chamber 40 upper surface side to contact simultaneously, and also be suitable.

So, adopt Figure 17 A to 56a of leaf spring shown in the 17C and 56c, the seventh embodiment of the invention casting apparatus for formation of resin-made membrane has the effect same with the 6th embodiment equally.

In the 8th embodiment, Figure 18 is an eighth embodiment of the invention casting apparatus for formation of resin-made membrane illustration to Figure 20.Figure 18 is a side elevation view, specifically represents casting apparatus, and Figure 19 is a perspective view, the structure of protective plate and elastic sealing element and assembling situation in the indication equipment, and Figure 20 then specifies extraneous air and flows into state along Figure 18 P-P line cross section.In these illustrations, the numbering identical with top explanation represents that part is identical or consistent, so its explanation is omitted.

As Figure 18 and shown in Figure 19, in the 8th embodiment, although the structure with above-mentioned the 6th embodiment shown in Figure 180 is identical basically for structure, but inhaling chamber 40 suction inlets (suction inlet portion) 40a end, adorn a protective plate 160, by to the screening of aperture, end, suppress the suction that produces through the end, this protective plate 160 can move along film 2 widths.

More precisely, as shown in figure 19, open an elongated hole 160a on the protective plate 160, install to construction bolt 162 and inhale on the chamber 40, the bolt of adorning passes elongated hole 160a, by packing ring 161, tightens with respect to inhaling chamber 40 upper wall 41a.Owing to be elongated hole 160a, protective plate 160 can move along film 2 widths, thereby can adjust the end amount of screening of inhaling chamber 40 suction inlet 40a.In passing, although just end side of present embodiment equipment broad ways that Figure 19 represents, and other end side structures are all identical therewith.

Because the eighth embodiment of the invention casting apparatus for formation of resin-made membrane that is provided with like this operation is the same with the equipment operation of the 6th embodiment basically, so present embodiment is only described the effect of protective plate 160 with reference to Figure 20.

As previously mentioned, with regard to example before shown in Figure 33, positive next air-flow is for inhaling chamber 104 front oral area primary airs, so, owing to dynamic pressure is partly arranged at B2, and produce eddy current because of suction in the B1 part, thereby defect appears, and or not film 102 vibrations (waving), be brought into exactly and inhale in the chamber 104.

On the other hand, in this embodiment, shown in Figure 20 dotted arrow, because the transformation of protective plate 160, the air-flow that the side is come becomes front oral area primary air, so generating, dynamic pressure or eddy current be inhibited, so that film 2 vibrations (waving) or bring the situation of inhaling chamber 40 into and be controlled, the pipe resin kind can not make film stablize moulding.

Particularly film forming adopts under the quite low tensile viscosity resin situation, and when film 2 stably closely contacted with casting roller 3, present embodiment can play very big effect.

In addition, if protective plate 160 moves according to film 2 cross-sectional constriction amounts, then air-flow can rationally be controlled.

In the 9th embodiment, Figure 21 represents the ninth embodiment of the invention casting apparatus for formation of resin-made membrane to Figure 23, Figure 21 is a side elevation view, concrete expression casting apparatus, Figure 22 is a perspective view, the structure of suction nozzle and elastic sealing element and assembling situation in the indication equipment, Figure 23 then specifies extraneous air and flows into state along Figure 21 Q-Q line cross section.The numbering identical with top explanation represents that part is identical or consistent, so its explanation is omitted.

The structure of described the 9th embodiment is the same with above-mentioned the 6th embodiment shown in Figure 21 basically, but exception is as Figure 21 and shown in Figure 22, adorn a side draught mouth 70 in suction chamber 40 suction inlets (suction inlet portion) 40a end, the air that the suction end side is come, this side draught mouth 70 connects vavuum pump 71, inhales chamber 40 suction inlet 40a end air with vavuum pump 71 by 70 suctions of side draught mouth.In passing, although just end of present embodiment equipment broad ways that Figure 22 represents, and other end side structures are all identical therewith.

The 9th embodiment casting apparatus for formation of resin-made membrane operation that is provided with like this is the same with the equipment operation of the 6th embodiment basically, so, be only limited to the effect of side draught mouth 70 with reference to the description that Figure 23 did.

In this embodiment, shown in Figure 23 dotted arrow, because the suction operation of side draught mouth 70, the air-flow that produces because of 70 suctions of side draught mouth is a primary air, suppressed with actuation pressure and eddy current generation, so film 2 vibrates (waving) or is brought into suction chamber 40 and is suppressed, pipe resin kind not consequently, film is stablized moulding and is become possibility.

Particularly film forming adopts under the quite low tensile viscosity resin situation, and when film 2 stably closely contacted with casting roller 3, present embodiment can play great role.

In addition, if control the air capacity that vavuum

pump

5 and 71 sucks chamber 40 and side draught mouth 70 respectively, then air-flow can rationally be controlled.

In the tenth embodiment, Figure 24 is a tenth embodiment of the invention casting apparatus for formation of resin-made membrane illustration to Figure 26.Figure 24 is the side elevational circle, specifically represents casting apparatus, and Figure 25 is a perspective view, the expression suction nozzle, and protective plate and elastic sealing element structure and the assembling situation in equipment, Figure 26 then specifies extraneous air and flows into state along Figure 24 R-R line cross section.In these illustrations, the numbering identical with top explanation represents that part is identical or consistent, so its explanation is omitted.

The structure of described the tenth embodiment is the same with above-mentioned the 6th embodiment shown in Figure 24 basically, but being as Figure 24 and shown in Figure 25 side draught mouth 70 as described in protective plate 160 shown in the 8th embodiment and the 9th embodiment being housed of exception.

In more detail, adorn a protective plate 160 in suction chamber 40 suction inlets (suction inlet portion) 40a end, the aperture, end of screening suppresses the suction by the end generation, and this protective plate 160 can move along film 2 widths.And, this protective plate 160 (just inhaling 40 suction inlet 40a ends, chamber) installation side suction nozzle 70, the air that the suction end side is come.This side draught mouth 70 connects vavuum pump 71, so that inhale the air of 40 suction inlet 40a ends, chamber with vavuum pump 71 by 70 suctions of side draught mouth.

In addition, as the 8th embodiment, as shown in figure 25, open an elongated hole 160a on the protective plate 160, protective plate 160 is installed to inhale on the chamber 40 again, its mode is to pass elongated hole 160a with construction bolt 162, by packing ring 161, tighten again with respect to inhaling chamber 40 upper wall 41a.Owing to be elongated hole 160, protective plate 160 can move along film 2 widths, thereby adjusts the amount of screening of inhaling 40 suction inlet 40a ends, chamber.

In passing, although just end side of present embodiment equipment broad ways that Figure 25 represents, and other end side structures are all identical therewith.

The operation of the tenth embodiment casting apparatus for formation of resin-made membrane of structure is the same with the equipment operation of the 6th embodiment basically like this, so, the effect of protective plate 160 and side draught mouth 70 is only described with reference to Figure 26.

In this embodiment, shown in Figure 26 dotted arrow, because the suction operation of side draught mouth 70 is so the air-flow that produces because of 70 suctions of side draught mouth is a primary air, in addition, protective plate 160 is also changed the suction of inhaling chamber 40, cause dynamic pressure and eddy current to generate and suppressed, so film 2 vibrates (waving) or is brought into suction chamber 40 and is suppressed, pipe resin kind not consequently, film is stablized moulding and is become possibility.

In addition, if control the air capacity that vavuum

pump

In the 11 embodiment, Figure 27 and Figure 28 are respectively side elevation view and front elevation view, all specifically represent the eleventh embodiment of the invention casting apparatus for formation of resin-made membrane.

The casting apparatus for formation of resin-made membrane that described the 11 embodiment relates to, its make are that above-mentioned second embodiment casting apparatus increase by moves radially mechanism, are used for moving radially suction chamber 40 along casting roller 3, adjust both seal clearances to required size.In each illustration, the numbering identical with top explanation represents that part is identical or consistent, and for for simplicity, it illustrates omission.

In the 11 embodiment casting apparatus, as Figure 27 and shown in Figure 28, adopt a saddle (guide) 13 as circumference travel mechanism, be used for moving suction chamber 40 along casting roller 3 circumferencial directions, keep required seal clearance simultaneously.

This saddle 13 is contained on the bogie side frame 17 by

construction bolt

12,3 roll shaft 16 side ends of pivoting support casting roller.One elongated poroid guide rail 13a is arranged on this saddle 13, make and be contained in two pivot pins (or roller) 11a engagement of inhaling on 40 sides, chamber, inhale chamber 40 along the guiding of casting roller 3 circumferencial directions.

In addition, in this embodiment, adopt construction bolt 12,, adjust casting roller 3 outer circumference surfaces and inhale chamber 40 required seal clearances with respect to the mode of bogie side frame 17 adjustment saddles 13 setting height(from bottom) positions.That is to say that above-mentioned construction bolt 12 plays the effect that moves radially mechanism.

In passing, although just end side of present embodiment equipment broad ways that Figure 28 represents, and other end side layouts is all identical therewith.

In addition, T pressing mold 1 lower surface seals with the above-mentioned elastic sealing element of inhaling on the chamber 40 50 that is contained in suction chamber 40 upper surface spacings.

The eleventh embodiment of the invention casting apparatus for formation of resin-made membrane of this structure still has the effect identical with the 6th embodiment just at circumference travel mechanism and textural the 6th embodiment that is different from that moves radially mechanism.

Just in described the 11 embodiment, also might adopt the described elastic sealing element 50 of the 4th to the 7th embodiment or arbitrary metal leaf spring 56a to 56c with adopt described protective plate 160 of the 8th to the tenth embodiment or side draught mouth 70.

In the 12 embodiment, Figure 29 and Figure 30 are respectively side elevation view and front elevation view, specifically represent the twelveth embodiment of the invention casting apparatus for formation of resin-made membrane.

In described the 12 embodiment, have one to move radially along casting roller 3 and to inhale chamber 40, adjust the move radially mechanism of both seal clearances to required size, be arranged in above-mentioned the 3rd embodiment casting apparatus.In each illustration, the numbering identical with top explanation represents that part is identical or consistent, and for simplicity, it illustrates omission.

In the 12 embodiment casting apparatus, as Figure 29 and shown in Figure 30, actuator 20 and saddle (guide) 23 is used for moving suction chamber 40 along casting roller 3 circumferencial directions as circumference travel mechanism, keeps required seal clearance simultaneously.

In this structure, the 16 coaxial supportings of 3 roll shafts of actuator 20 nearsides and casting roller can be rotated around a roll shaft 16, and its terminal surface then is contained on the saddle 23 by construction bolt 22.One elongated poroid guide rail 23a is arranged on this saddle 23, make the engagement with two pivot pins (or roller) 11a, 11a then installs to and inhales 40 sides, chamber, inhales chamber 40 along the guiding of casting roller 3 circumferencial directions.

In addition, in this embodiment, adopt construction bolt 22,, adjust casting roller 3 outer circumference surfaces and inhale chamber 40 required seal clearances with respect to the mode of actuator 20 adjustment saddles 23 setting height(from bottom) positions.That is to say that above-mentioned construction bolt 22 plays the effect that moves radially mechanism.

In passing, although just end side of present embodiment equipment broad ways that Figure 30 represents, and other end side layouts is all identical therewith.

In the casting apparatus for formation of resin-made membrane of this structure of twelveth embodiment of the invention, situation as the 3rd embodiment, when T pressing mold 1 and casting roller 3 spacings are too big, then carry out coarse adjustment, like this by actuator 20, counterclockwise, around a roll shaft 16, move and inhale chamber 40, be advanced to rational position, subsequently, finely tune again, suction chamber 40 is moved along saddle 23 elongated poroid guide rail 23a, place assigned position, so, inhale chamber 40 suction inlet 40a and be placed near closely contacting between film 2 and the casting roller 3 and begin part.

Otherwise, if T pressing mold 1 is too little with casting roller 3 spacings, then carry out coarse adjustment, like this by actuator 20, clockwise direction, around a roll shaft 16, move and inhale chamber 40, retreat into rational position, subsequently, finely tune again, suction chamber 40 is moved along saddle 23 elongated poroid guide rail 23a, put the hand assigned position.

The described casting apparatus for formation of resin-made membrane of twelveth embodiment of the invention has the effect identical with the 3rd embodiment, and, because just in circumference travel mechanism with move radially the textural of mechanism and be different from the 6th embodiment, so have the effect identical with the 6th embodiment.

Just in described the 12 embodiment, also might adopt the described elastic sealing element 50 of the 4th to the 7th embodiment or arbitrary metal leaf spring 56a to 56c with adopt described protective plate 160 of the 8th to the tenth embodiment or side draught mouth 70.

Claims

1. casting apparatus for formation of resin-made membrane comprises: the pressing mold (1) that molten resin is extruded into film (2) usefulness; The chill roll (3) of usefulness is cooled off in the above-mentioned film (2) that the above-mentioned pressing mold of acceptance (1) is extruded on outer circumference surface, conveying simultaneously; And the suction chamber (4 that air is used between suction above-mentioned film (2) and the above-mentioned chill roll (3), 40), thereby above-mentioned film (2) is closely contacted with above-mentioned chill roll (3) surface, its characteristics are: above-mentioned suction chamber (4,40) be provided with separately from above-mentioned pressing mold (1), arrange formation required seal clearance (4d) with respect to above-mentioned chill roll (3), adorn a circumference travel mechanism in addition, keeping under above-mentioned required seal clearance (4d) situation, move above-mentioned suction chamber (4,40) along above-mentioned chill roll (3) circumferencial direction.

2. casting apparatus for formation of resin-made membrane as claimed in claim 1, its characteristics are: actuator (7) is equipped with in above-mentioned circumference travel mechanism, and its nearside is supported, and can rotate around the rotating shaft of above-mentioned chill roll (3), its terminal surface then firmly is fixed on the above-mentioned suction chamber (4,40).

3. casting apparatus for formation of resin-made membrane as claimed in claim 1, its characteristics are: guide (8) is equipped with in above-mentioned circumference travel mechanism, connects bogie side frame (8b), but the above-mentioned chill roll of pivoting support (3) side end, enable to guide above-mentioned suction chamber (4,40) along above-mentioned chill roll (3) circumferencial direction.

4. casting apparatus for formation of resin-made membrane as claimed in claim 1, its characteristics are: actuator (9) is equipped with in above-mentioned circumference travel mechanism, its nearside is supported, can rotate around the rotating shaft of above-mentioned chill roll (3), guide (10) is housed again in addition, connect above-mentioned actuator (9) terminal surface, guide above-mentioned suction chamber (4,40) along above-mentioned chill roll (3) circumferencial direction.

5. as each casting apparatus for formation of resin-made membrane of claim 1 to 4, its characteristics are: have an elastic sealing element to place in the middle of above-mentioned pressing mold (1) and the above-mentioned suction chamber (4,40).

6. casting apparatus for formation of resin-made membrane as claimed in claim 5, its characteristics are: the above-mentioned elastic sealing element of layout runs through the width that surpasses above-mentioned film (2) overall with, constitute by bar-shaped elastic sealed body (51) based on foaming agent, the whole surface coverage of above-mentioned foaming agent is surrounded by the glass cloth and the fixture (52 of aluminium foil, 53), above-mentioned elastic sealed body (51) is fixed on above-mentioned suction chamber (40) and above-mentioned pressing mold (1) one side, and above-mentioned pressing mold of enable closed (1) and gap, above-mentioned suction chamber (40), its mode is to make elastic sealed body (51) tightly suppress above-mentioned suction chamber (40) and above-mentioned pressing mold (1) the opposing party with elastic force, makes to be in contact with it.

7. casting apparatus for formation of resin-made membrane as claimed in claim 5, its characteristics are: the above-mentioned elastic sealing element of layout runs through the width that surpasses above-mentioned film (2) overall with, constitute with corrosion resistant metal leaf spring (56a is to 56c), be contained in above-mentioned suction chamber (40) and above-mentioned pressing mold (1) one side, and above-mentioned pressing mold of enable closed (1) and gap, above-mentioned suction chamber (40), its mode is to make above-mentioned metal leaf spring (56a is to 56c) tightly suppress above-mentioned suction chamber (40) and above-mentioned pressing mold (1) the opposing party with elastic force, makes to be in contact with it.

8. casting apparatus for formation of resin-made membrane as claimed in claim 1, its characteristics are: comprise a radial drive mechanism in addition, move radially above-mentioned suction chamber (40) along above-mentioned chill roll (3), adjust above-mentioned required seal clearance (4d).

9. casting apparatus for formation of resin-made membrane as claimed in claim 8, its characteristics are: actuator (110) is equipped with in above-mentioned circumference travel mechanism, its nearside is supported, can rotate around the rotating shaft of above-mentioned chill roll (3), its terminal surface firmly is fixed on the above-mentioned suction chamber (40), and the above-mentioned mechanism that moves radially then is located at above-mentioned suction chamber (40) and above-mentioned actuator (110) assembled portion.

10. casting apparatus for formation of resin-made membrane as claimed in claim 8, its characteristics are: guide (13) is equipped with in above-mentioned circumference travel mechanism, connect bogie side frame (17), but the side end of the above-mentioned chill roll of pivoting support (3), enable to guide above-mentioned suction chamber (40) along above-mentioned chill roll (3) circumferencial direction, the above-mentioned structure that moves radially mechanism is then with move radially above-mentioned guide (13) mechanism along above-mentioned chill roll (3) the same.

11. casting apparatus for formation of resin-made membrane as claimed in claim 8, its characteristics are: actuator (20) is equipped with in above-mentioned circumference travel mechanism, its nearside is supported, can rotate around above-mentioned chill roll (3) gyroaxis, also has a guide (23), be contained in above-mentioned actuator (20) terminal surface, guide above-mentioned suction chamber (40) along above-mentioned chill roll (3) circumferencial direction, the above-mentioned mechanism that moves radially then is contained in above-mentioned guide (23) and connects above-mentioned driving mechanism (20) part.

12. as each casting apparatus for formation of resin-made membrane of claim 8 to 11, its characteristics are: there is an elastic sealing element to place in the middle of above-mentioned pressing mold (1) and the above-mentioned suction chamber (40).

13. casting apparatus for formation of resin-made membrane as claimed in claim 12, its characteristics are: the above-mentioned elastic sealing element of layout runs through the width that surpasses above-mentioned film (2) overall with, constitute by bar-shaped elastic sealed body (51) based on foaming agent, the whole surface coverage of above-mentioned foaming agent is surrounded by the glass cloth and the fixture (52 of aluminium foil, 53), above-mentioned elastic sealed body (51) is fixed on above-mentioned suction chamber (40) and above-mentioned pressing mold (1) one side, and the gap between above-mentioned pressing mold of enable closed (1) and the above-mentioned suction chamber (40), its mode is to make elastic sealed body (51) tightly suppress above-mentioned suction chamber (40) and above-mentioned pressing mold (1) the opposing party with elastic force, makes to be in contact with it.

14. casting apparatus for formation of resin-made membrane as claimed in claim 12, its characteristics are: the above-mentioned elastic sealing element of layout runs through the width that surpasses above-mentioned film (2) overall with, constitute with corrosion resistant metal leaf spring (56a is to 56c), be contained in above-mentioned suction chamber (40) and above-mentioned pressing mold (1) one side, and the gap between above-mentioned pressing mold of enable closed (1) and the above-mentioned suction chamber (40), its mode is to make above-mentioned metal leaf spring (56a is to 56c) tightly suppress above-mentioned suction chamber (40) and above-mentioned pressing mold (1) the opposing party with elastic force, makes to be in contact with it.

15. casting apparatus for formation of resin-made membrane as claimed in claim 12, its characteristics are: comprise a protective plate (160) in addition, above-mentioned suction chamber (40) suction inlet portion (40a) end of screening, the above-mentioned protective plate (160) of setting can move along above-mentioned film (2) width.

16. casting apparatus for formation of resin-made membrane as claimed in claim 12, its characteristics are: comprise a suction nozzle (70) in addition, aspirate above-mentioned suction chamber (40) suction inlet portion (40a) end side air always.

17. casting apparatus for formation of resin-made membrane as claimed in claim 12, its characteristics are: comprise a protective plate (160) in addition, above-mentioned suction chamber (40) suction inlet portion (40a) end of screening, the above-mentioned protective plate (160) that is provided with can move along above-mentioned film (2) width, but also comprise a suction nozzle (70), aspirate above-mentioned suction chamber (40) described suction inlet portion (40a) end side air always.